Paul,
Attached are pics depicting the clearance between the motor mount tube
and the aft face of the oil cooler.  If I were to enclose the this area
would there be enough space there for good cooling.  This scenario would
feed a square ejector placed beneath the engine.  I was also thinking of
a chimmny in front of the engine with the ejector running on top of the
engine.  Heat rises why cook the gear box.  I will keep thinking.  (
dimensions 3" at the front 5" at the rear 4" as shown.)

Joe Berki
Limo EZ

I am not sure what you have in mind Joe. How about a sketch.
If this is the back side of the cores you don't need to enclose
them. Just seal the feed ducts and the cowl and let the ejector
suck the hot air out.

Here also are some old shots of your layout. Does your MM still
look like jpg 371?